Joint for railway rail sections



Nov. 4, 1941.

JOINT FOR RAILWAY RAIL SECTIONS J. A. BOURGEQIS Filed Jun 14, 1939 Patented Nov. 4, 1941 Jean Jules Arnold Bourgeois, Baden, Switzerland Application June 14, 1939, Serial No. 279,226

In Switzerland August 1, 1938 1 Claim.

The subject of the present invention is a joint for railway rail sections constructed in such a manner so as to satisfy all the conditions imposed by the problem of the joint, that is to say to ensure in a permanent manner both the maintenance of the alignment of the ends of the rail sections and the transmission, from one section to the other of the bending and shearing forces which are produced at the point of discontinuity, without for this purpose obstructing the relative movement of the sections in an axial direction.

The primary object of the present invention is the provision of a rail joint in which at least one longitudinal element is arranged substantially parallel to the axis of the rails and below adjacent rail ends, together with transverse elements which connect the longitudinal element to each end of the rail ends, with the transverse elements being located in a plane approximately at right angles to the axis of the rails, with the longitudinal element connected to the corresponding transverse elements, With its vertical neutral axis plane containing the vertical center line of the corresponding transverse elements.

In the drawing Figure 1 is a broken view in side elevation of one form of the improved rail joint.

Figure 2 is a transverse vertical section through such joint and rails of the form shown in Figure 1.

Figure 3 is a view similar to Figure 1, showing a somewhat modified form of rail joint.

Figure 4 is a transverse vertical section through the rail joint of Figure 3.

Figure 5 is a broken view in side elevation of a further form of rail joint.

Figure 6 is a transverse vertical section through the joint shown in Figure 5.

In the form of construction according to Figs. 1 and 2 the connecting elements 50 are located symmetrically relatively to the plane of symmetry of the rails and 2. The parts 5| and 52 constituting the element normal to the axis are located substantially in the same plane and located symmetrically relatively to the plane of symmetry of the rails 2. The parts 5|, 52 are each welded separately at their lower part to longitudinal elements 50, Whilst the part 53, by which they are connected to the rail, conforms with the profile of the rail. The neutral axis of each of the elements 50 is located at the middle of the width of each of the parts 5| and 52. As will be seen from Figs. 1 and 2, the parts 5| and 52 are reinforced at their upper end by means of an intermediate member 53, secured rigidly to the said parts 5| and 52, constituting the elements normal to the axis. The reinforced end 53 is of such a rigidity that the compression and contraction forces which it transmits from the rail to the parts 5| and 52 are distributed uniformly throughout the entire section and the height of the latter.

Each of the parts 5| and 52 is formed, for example, of two webs juxtaposed in the direction of the axis of the rail.

The form of construction shown in Figs, 3 and 4 is substantially identical with that shown in Figs. 1 and 2. The parts 53, welded to the plates 5|, 52, are secured to the rails 2 by means of bolts 54 and intermediate members 55.

.In the rail joint in Figs. 5 and 6, the elements 55 normal to the axis of the rails are provided with reinforcements 51 which are provided with elements 58 located along an extension of the web of the rail and welded to the flange of the latter. Each of the longitudinal connecting elements 59 is constructed in such a manner that the extension and compressive strains of the parts forming the elements 56 normal to the axis, at their point of securing to the elements 59, are distributed throughout the section of the said parts constituting the elements 56. The lat ter is welded to two rail sections 59 located symmetrically relatively to the plane of symmetry of the rails I, 2 and with the flange at the top. The flange 60 is connected to the head 6| by bars 62.

In the described constructions, it will be apparent that the rail joint includes longitudinal elements arranged parallel to the axis of the rails, disposed below adjacent rail ends, and rigid in the longitudinal direction, together with transverse elements which rigidly connect the respective longitudinal elements to the rail ends, the transverse elements being located in a plane extending at least approximately at right angles to the axis of the rails, with the longitudinal elements connected to the corresponding transverse element so that the vertical neutral axis plane of the longitudinal element contains the vertical center line of the corresponding transverse element;

I claim:

In a rail joint at least one longitudinal element substantially parallel to the axis of the rails, said element being disposed below adjacent rail ends, and rigid in the longitudinal direction, and transverse elements connecting said longitudinal element respectively to each end of the adjacent rail ends, said transverse elements each being rigidly fixed to the rail ends, and

to the longitudinal element and located in a plane extending at least approximately at right angles to the axis of the rails, said transverse elements being substantially rigid with respect to forces acting in the plane of the transverse 

